Nanowire Growth for Sensor Arrays

TL;DR

This paper presents a novel fabrication method for nanowire-based sensors and arrays, demonstrating their use in electrochemical detection of glucose with various nanowire materials.

Contribution

It introduces a direct electrodeposition technique for growing nanowires between contact electrodes, enabling the creation of sensor arrays with diverse nanowire materials.

Findings

Successful electrodeposition of Pd nanowires and arrays.

Demonstrated glucose detection using Pt nanowire sensors.

Versatile fabrication of metal, metal oxide, and conducting polymer nanowires.

Abstract

A design concept for nanowire-based sensors and arrays is described. The fabrication technique involves electrodeposition to directly grow nanowires between patterned thin film contact electrodes. To prove our concept, we have electrodeposited 1-mm diameter Pd single wires and small arrays. To demonstrate nanowire sensors, we have electrochemically grown metal (Pd, Au, Pt), metal oxide (Sb2O3), and conducting polymer (polyaniline) bundled nanowires. Using Pt bundled nanowires surface modified with glucose oxidase, we have demonstrated glucose detection as a demonstration of a biomolecular sensor.